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US 7,458,557 B2Granted
Electromagnetic valve
AssigneeAdvics Co., Ltd.
InventorsShinichi Tsujimura, Masuhiro Kondo
Life of this patent
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Abstract
A projection is provided in a flange of a resin spool, and a concave portion is provided in a yoke in a position facing the projection. The movement of the spool in the radial direction of the spool is restricted by inserting the projection into the concave portion. Because the inner circumferential surface of the concave portion and the outer circumferential surface of the projection are brought into contact, the movement of the spool in the axial direction of the spool is inhibited by frictional resistance at the points of contact.
Claims12
An electromagnetic valve, comprising:
- a resin spool having a cylindrical portion and a flange that extends outward in the radial direction from an end of the cylindrical portion;
- a coil, which is wound around the spool, for forming a magnetic field when electric power is supplied;
- and
- a metal magnetic path member encircling the spool and the coil and forming a magnetic path, wherein
- plurality of projections are provided on the flange on an axial-direction end face of the spool;
- plurality of concave portions are provided on the magnetic path member in a position that faces the plurality of projections;
- and
- the plurality of projections are accommodated in the plurality of concave portions such that an outer circumferential surface of the plurality of projections touches an inner circumferential surface of the plurality of concave portions.
5 more elements
Dependencies are inferred from the claim text.